executing .py file from qt

hi,

I am writing a Qt application, where i have a "helloworld.py" and "helloworld .ui" file.
but i m getting trouble here, i wanna run /execute this .py file from within the qt application.
i have searched a lot on internet, and came across the QProcess class.
i tried to use it.(used start and execute methods from the class), but i dint get the results,
can anyone pls ans my question.

my code is bellow

Code:

---

QProcess process;
        QString scriptFile =  "D://QTDev//QuickEditor//helloworld.py";
        process.execute("Python D://QTDev//QuickEditor//helloworld.py");
 
        process.start("cd D://QTDev//QuickEditor//");
        process.start("Python D://QTDev//QuickEditor//helloworld.py");
        process.waitForFinished(1000);

---

Code:

---

from PyQt5 import QtCore, QtGui, QtWidgets
    import sys
 
    class Ui_Form(QtWidgets.QWidget):
    def __init__(self):
    	QtWidgets.QWidget.__init__(self)
    	self.setupUi(self)
 
    def setupUi(self, Form):
        Form.setObjectName("Form")
        Form.resize(400, 300)
        self.verticalLayout = QtWidgets.QVBoxLayout(Form)
        self.verticalLayout.setObjectName("verticalLayout")
        self.pushButton = QtWidgets.QPushButton(Form)
        self.pushButton.setObjectName("pushButton")
        self.verticalLayout.addWidget(self.pushButton)
        self.label = QtWidgets.QLabel(Form)
        self.label.setText("")
        self.label.setObjectName("label")
        self.verticalLayout.addWidget(self.label)
 
        self.retranslateUi(Form)
        QtCore.QMetaObject.connectSlotsByName(Form)
 
    def retranslateUi(self, Form):
        _translate = QtCore.QCoreApplication.translate
        Form.setWindowTitle(_translate("Form", "Form"))
        self.pushButton.setText(_translate("Form", "Press Me!!!"))
        self.pushButton.clicked.connect(self.printHello)
 
    def printHello(self):
    	print( "Hello World !")
 
 
    if __name__ == '__main__':
        app = QtWidgets.QApplication(sys.argv);
        ex = Ui_Form();
        ex.show();
        sys.exit(app.exec_())

---

The first argument to QProcess::start() is the program you run, the second argument is a list of arguments for that program.

Cheers,
_

First listing line 3: is python on the system PATH? Why are you doubling the forward slashes? This will be passed unchanged to the program: you likely need the native path separators

Line 5. This would not change the directory for the process at line 6 even if it worked.

yes python is there on PATH..
what if i have no argument list.. still i have to give empty?

Quote:

---

Originally Posted by prachi kamble

yes python is there on PATH..
what if i have no argument list.. still i have to give empty?

---

No, there is an overload that does not require the arguments QStringList if you just want to run the Python interpreter without a script.

Cheers,
_

thnx sir,
so it means the following code is correct?

Code:

---

QProcess process;
 
        process.setWorkingDirectory("D:\\QTDev\\QuickEditor");
        process.setProgram("python helloworld.py");
        process.start("python helloworld.py");
        process.waitForFinished(1000);

---

No, unless you have an executable called "python hellowordl.py", which is highly unlikely, most programs don't have spaces in their program names.

Cheers,
_